| ; RUN: opt -lcssa -S %s | FileCheck %s |
| source_filename = "small.c" |
| |
| @a = common dso_local global i32 0, align 4, !dbg !0 |
| |
| ; CHECK-LABEL: @f |
| define dso_local void @f() !dbg !10 { |
| entry: |
| %0 = load i32, i32* @a, align 4, !dbg !17 |
| %tobool1 = icmp eq i32 %0, 0, !dbg !18 |
| br i1 %tobool1, label %for.end, label %for.inc.lr.ph, !dbg !18 |
| |
| for.inc.lr.ph: ; preds = %entry |
| br label %for.inc, !dbg !18 |
| |
| for.inc: ; preds = %for.inc, %for.inc.lr.ph |
| %1 = phi i32 [ %0, %for.inc.lr.ph ], [ %inc, %for.inc ] |
| call void @llvm.dbg.label(metadata !14), !dbg !19 |
| %inc = add nsw i32 %1, 1, !dbg !20 |
| %tobool = icmp eq i32 %inc, 0, !dbg !18 |
| br i1 %tobool, label %for.cond.for.end_crit_edge, label %for.inc, !dbg !18, !llvm.loop !21 |
| |
| for.cond.for.end_crit_edge: ; preds = %for.inc |
| store i32 %inc, i32* @a, align 4, !dbg !17 |
| br label %for.end, !dbg !18 |
| |
| for.end: ; preds = %entry, %for.cond.for.end_crit_edge |
| ret void, !dbg !23 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.label(metadata) #0 |
| |
| attributes #0 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!2} |
| !llvm.module.flags = !{!7, !8, !9} |
| |
| !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) |
| !1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) |
| !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) |
| !3 = !DIFile(filename: "small.c", directory: "./") |
| !4 = !{} |
| !5 = !{!0} |
| !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !7 = !{i32 2, !"Dwarf Version", i32 4} |
| !8 = !{i32 2, !"Debug Info Version", i32 3} |
| !9 = !{i32 1, !"wchar_size", i32 4} |
| !10 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 3, type: !11, isLocal: false, isDefinition: true, scopeLine: 4, isOptimized: true, unit: !2, retainedNodes: !13) |
| !11 = !DISubroutineType(types: !12) |
| !12 = !{null} |
| !13 = !{!14} |
| !14 = !DILabel(scope: !15, name: "L", file: !3, line: 6) |
| !15 = distinct !DILexicalBlock(scope: !16, file: !3, line: 5, column: 3) |
| !16 = distinct !DILexicalBlock(scope: !10, file: !3, line: 5, column: 3) |
| !17 = !DILocation(line: 5, column: 10, scope: !15) |
| !18 = !DILocation(line: 5, column: 3, scope: !16) |
| !19 = !DILocation(line: 6, column: 3, scope: !15) |
| !20 = !DILocation(line: 5, column: 14, scope: !15) |
| !21 = distinct !{!21, !18, !22} |
| !22 = !DILocation(line: 6, column: 5, scope: !16) |
| !23 = !DILocation(line: 7, column: 1, scope: !10) |
| |
